[TRTLLM-15115][test] Prune Starcoder2-3B functional and unit tests

[xinhe-nv]

Remove out-of-scope Starcoder2-3B coverage per Test Scope Review 2026.7, including QA/CI list entries, encode/cli harnesses, and 3B-specific unit tests while leaving StarCoder2-7B/15B coverage intact.

Dev Engineer Review

• Removed StarCoder2-3B accuracy references, harness coverage, fixtures, performance configuration, and unit-test coverage.
• Preserved StarCoder2-7B and StarCoder2-15B coverage.
• Updated QA, A100, and test-duration entries consistently.
• No production-code or API changes were introduced.
• Configuration and test-list changes have valid scope and no apparent format or duplication issues.

QA Engineer Review

• Removed TestStarcoder2_3B from tests/integration/defs/accuracy/test_cli_flow.py.
• Removed StarCoder2-3B scenarios from tests/unittest/_torch/modeling/test_modeling_starcoder2.py.
• Removed StarCoder2-3B tokenizer coverage from tests/unittest/llmapi/test_llm.py.
• Removed the related accuracy entries from:
  • tests/integration/test_lists/qa/llm_function_core.txt
  • tests/integration/test_lists/test-db/l0_a100.yml
• The removed test coverage is reflected in the QA and CI lists. StarCoder2-7B and StarCoder2-15B coverage remains.
• Verdict: needs follow-up because two A100 CI runs failed. The subsequent A100X run passed with fail-fast disabled.

Description

Test Coverage

PR Checklist

Please review the following before submitting your PR:

• PR description clearly explains what and why. If using CodeRabbit's summary, please make sure it makes sense.

• PR Follows TRT-LLM CODING GUIDELINES to the best of your knowledge.

• Test cases are provided for new code paths (see test instructions)

• If PR introduces API changes, an appropriate PR label is added - either api-compatible or api-breaking. For api-breaking, include BREAKING in the PR title.

• Any new dependencies have been scanned for license and vulnerabilities

• CODEOWNERS updated if ownership changes

• Documentation updated as needed

• Update tava architecture diagram if there is a significant design change in PR.

• The reviewers assigned automatically/manually are appropriate for the PR.

• Please check this after reviewing the above items as appropriate for this PR.

GitHub Bot Help

To see a list of available CI bot commands, please comment /bot help.

[xinhe-nv]

/bot run --stage-list "a100"

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 0059d5db-7bb9-4153-8006-84365b666592

📥 Commits

Reviewing files that changed from the base of the PR and between 662299d and 18dc0c7.

📒 Files selected for processing (1)

• tests/unittest/llmapi/test_llm.py

💤 Files with no reviewable changes (1)

• tests/unittest/llmapi/test_llm.py

---

Walkthrough

The PR removes StarCoder2-3B from accuracy references, integration schedules, model fixtures, performance configurations, timing data, attention settings, modeling tests, and tokenizer test parameters.

Changes

StarCoder2-3B coverage removal

Layer / File(s)	Summary
Integration model coverage tests/integration/defs/accuracy/test_llm_api_pytorch_encode.py, tests/integration/defs/conftest.py, tests/integration/defs/perf/allowed_configs.py	The decoder model parameter, model fixtures, and performance allowlist entry no longer include starcoder2-3b.
Integration references and schedules tests/integration/defs/accuracy/references/gsm8k.yaml, tests/integration/defs/accuracy/test_cli_flow.py, tests/integration/test_lists/qa/llm_function_core.txt, tests/integration/test_lists/test-db/l0_a100.yml, tests/integration/defs/.test_durations	StarCoder2-3B accuracy references, scheduled decoder encode tests, and recorded test timing are removed.
Unit model coverage tests/unittest/_torch/attention/model_attn_config.py, tests/unittest/_torch/modeling/test_modeling_starcoder2.py, tests/unittest/llmapi/test_llm.py	The StarCoder2-3B attention configuration, modeling scenarios, related imports, and tokenizer parameter are removed. StarCoder2-7B and StarCoder2-15B coverage remains.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 18dc0

This test-coverage pruning change is merge-ready after normal checks and review; no actionable merge-blocking risk remains.

Suggested reviewers: asfiyab-nvidia, brnguyen2, yechank-nvidia, stanleysun639, zhaoyuanh-nvidia

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the removal of StarCoder2-3B functional and unit test coverage.
Description check	✅ Passed	The description explains the scope and intent, but the Test Coverage section is empty while the checklist is completed.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands.}

[tensorrt-cicd]

PR_Github #66167 [ run ] triggered by Bot. Commit: 3e3cce7 Link to invocation

[tensorrt-cicd]

PR_Github #66167 [ run ] completed with state FAILURE. Commit: 3e3cce7
/LLM/main/L0_MergeRequest_PR pipeline #53841 (Partly Tested) completed with status: 'FAILURE'

CI Report

⚠️ Action Required:

• Please check the failed tests and fix your PR
• If you cannot view the failures, ask the CI triggerer to share details
• Once fixed, request an NVIDIA team member to trigger CI again

CI Agent Failure Analysis

Link to invocation

[xinhe-nv]

/bot run --gpu-type "A100X"

[tensorrt-cicd]

PR_Github #66202 [ run ] triggered by Bot. Commit: 3e3cce7 Link to invocation

[tensorrt-cicd]

PR_Github #66202 [ run ] completed with state FAILURE. Commit: 3e3cce7
/LLM/main/L0_MergeRequest_PR pipeline #53871 (Partly Tested) completed with status: 'FAILURE'

CI Report

⚠️ Action Required:

• Please check the failed tests and fix your PR
• If you cannot view the failures, ask the CI triggerer to share details
• Once fixed, request an NVIDIA team member to trigger CI again

CI Agent Failure Analysis

Link to invocation

[xinhe-nv]

/bot run --gpu-type "A100X" --disable-fail-fast

[tensorrt-cicd]

PR_Github #66296 [ run ] triggered by Bot. Commit: db9af45 Link to invocation

[tensorrt-cicd]

PR_Github #66296 [ run ] completed with state SUCCESS. Commit: db9af45
/LLM/main/L0_MergeRequest_PR pipeline #53955 (Partly Tested) completed with status: 'SUCCESS'

CI Report

Link to invocation